I think that there are folks who need them, do well with them and all that. I think that is just fine.
I don't think a beginner should start out on a mech
mod generally it's not a good idea.
Technically a mech is not a "need" by definition. People aren't like keeling over dead for lack of mech mod ownership or anything.
I say if you want one, that is fine, but if you are still too new to
vaping to even know what QUESTIONS to ask, that may be a problem.
Anna